Continuous depletion in tin productions has led to a newly emerging industry that is a tin by-product (amang) processing industry to harness mega tons of tin by-products produced in the past.
Sample locations were distant from any 'amang' processing plants. The external gamma dose rates ranged from 39 to 1039 nGy h 1. The mean external gamma dose rate was 222 191 nGy h 1. Small areas of relatively enhanced …
Malaysia's contributed only 3.9 % and by then there were only 63 mines in operation (Malaysian Department of Mines, 1997). With the drop in tin production and the cost of world's tin, attention shifted toward processing amang (a tin by product) for valuable minerals [1]. Amang is a local (Malaysian) slang word used by the tin
Currently amang processing plants in Malaysia employ three systems of water management in the wet gravity separation process. These systems may be classified as open water system, recycle water system (natural) and recycle water system (man-made). In the open water system, water is drawn from nearby river or stream, used in wet gravity ...
Measurements of external radiation level, radon/thoron daughters concentrations in air and uranium/thorium concentrations in airborne mineral dust at 16 amang plants in Malaysia were carried out for three consecutive months to assess radiation dose to workers. Estimated occupational dose was within the range of 1.710.9 mSv y1. The mean total dose at …
Three sampling locations were selected for this study i.e the amang effluent discharge point (P1), amang processing pond (P2) and Sg. Kampar (P3) which is located beside the amang processing pond ...
Workers in the industry are the most affected group of radiation exposures. Few conducted investigations by Hu and Koo (1983), Hu and Kandaiya (1985a), Choong and Hong (1985), AELB, 1991;Bahari et ...
The amang plants studied were of different processing capacities. Radiation dose assessments from external and internal (radon/thoron daughters and radionuclides in airborne …
Seven sediment samples were collected from two amang processing plants. Plant no. 1 is located in the state of Perak, while Plant no. 2 is located in the state of Selangor, Malaysia. Both states were selected for this study because they were, and still are, the major producers of tin and valuable minerals in Malaysia.
Gross alpha and gross beta activities were determined for mineral samples collected from five amang tailing factories. The measured activity of alpha ranged from 31 to 220,000 Bq kg−1 with an ...
Twenty six sediment samples were collected from two different amang processing plants employing close water natural system. Sediment samples were collected in special PVC …
The wet separation plant is equipped with Cross Flow Separators from Eriez, USA, Spiral Gravity Concentrators from Mineral Technologies [MD], Australia & Wet Table from Holman, UK. The company also has a State-of-the-Art Dry mineral processing plant producing over 50,000 MTs of heavies namely Garnet, Tin, Rutile, Zircon & Ilmenite per annum.
A radiological impact assessment (RIA) onto environment from radioactive minerals of amang and ilmenite was carried out in an amang processing plant at Dengkil, Selangor, Malaysia.
Pakistan J. of Biological Science 6(17): 1544-1547 Leeper, G.W. 1964. Introduction to Soil Science. 4th ed. Australia: Melbourne University Press. Mohsen, N., Ismail, B. & Pauzi, A. 2008. Assessment of natural radioactivity in water and sediment from amang (tin tailing) processing ponds. The Malaysian Journal of Applied Sciences 12(1): 150-159.
Workers in amang processing plants who have been with the plant for an average of 12.9 years and who were exposed to radioactive dust showed significantly higher frequencies of chromosomal aberration compared to control and even ilmenite-processing workers. ... In Malaysia, some plants were built very near to housing areas, some even as …
A radiological impact assessment (RIA) onto environment from radioactive minerals of amang and ilmenite was carried out in an amang processing plant at Dengkil, Selangor, …
A major portion of monazite was produced with xenotime as by-products of tin mine processing (Amang plant) in Malaysia [23, 24]. With an estimated reserve of 30,000 tons of rare earth mineral reserves, Malaysian monazite is composed of 6.5–7.5% of ThO 2 and 55.5–75.5% of REOs [26, 27].
for tin tailings processing in Peninsular Malaysia. Seven amang processing plants in Perak were selected as the study area, as depicted in Figure 1. These plants were chosen based on their processing productivity, with some plants like PP5 and PP7 having ceased processing activity but still storing tin tailings when required. The
Three types of water management systems are used by amang plants, i.e. Open Water System (OWS), Close Water System Man-made (CWS mm) and Close Water System Natural (CWSn). A study was carried out to determine the radiological environmental risk associated with these different water management systems in amang processing in Malaysia. The ...
Malaysia's Minister of Science, Technology and Innovation Chang Lin Kang speaks during a press conference in Kuala Lumpur, Malaysia, Tuesday, Oct. 24, 2023. Australian miner Lynas Rare Earth has won a reprieve until …
Radiological hazard associated with amang processing industry in Peninsular Malaysia and its environmental impacts ... it is concluded that radiation doses to some amang plant workers may approach ...
Continuous inhalation and ineluctable ingestion of long-lived alpha emitting particles from 222 Rn, 220 Rn and their daughters by worker in amang processing plants. 4.
Measurements of total airborne alpha activity, equilibrium equivalent concentration (EEC) of 222 Rn and 220 Rn progenies in amang processing plants in Malaysia.
Thirty three water samples were taken from seven amang (tin tailing) processing plants located in the state of Selangor and Perak, Malaysia. The amang plants comprise of three employing the open and close (natural and man made) management systems.
Continuous depletion in tin productions has led to a newly emerging industry that is a tin by-product (amang) processing industry to harness mega tons of tin by-products produced in the …
CP Malaysia, shrimp processing plant in Port Klang started operations in mid-year 2004. We are an HACCP certified shrimp processing plant and currently our main export market is to the USA, E.U. and Japan. Our processing plant covers a total production area of 2,100 m2 comprising the conventional (raw) products and cooked products section.
Tin tailing, locally known in Malaysia as Amang, is the by-product of tin ore mineral acquisition, processing, and refinery. Hence, the focus was redirected in processing these residues, whereby ...
External gamma exposure rates and airborne thorium levels in plants processing such minerals are studied. ... in airborne mineral dust at 16 amang plants in Malaysia were carried out for three ...
KINTA AMANG DRESSING PLANT SDN. BHD. was incorporated on in Malaysia with registration number of 0012382K / 1. KINTA AMANG DRESSING PLANT SDN. BHD.'s business includes BUSINESS RELATING TO AMANG ORE PROCESSING AND DEALER IN MINERALS. Get an accurate picture of a customer's financial status with a credit …
In Malaysia, some plants were built very near to ... Workers in amang processing plants who have been with the plant for an average of 12.9 years and who were exposed to radioactive dust showed ...
The fine aggregates used were amang (Minerals and Geoscience Department Malaysia), silica sand (Dura Technology Sdn. Bhd) and lead glass (Nippon Glass (M) Berhad). ... [51], amang-processing plants seem to show radiological effect to their workers and the environment surrounding them. Although A-UHPC has the best radiation absorption rate, it ...
In Malaysia, the amang industry is composed of both small and relatively large-scale plants. The industry employs about 1000 workers, with 50% of the 60 plants employing less than 10 workers and 24% employing less than five workers (Hewson, 1993). ... Amang processing plants have been shown to have radiological impact to its workers and the ...
The processing of amang, or tin tailings, for valuable minerals has been shown to technologically enhance NORM and this has stirred significant radiological safety and health concerns among Malaysia's regulatory authority. A growing radiological concern is now focused on the amang effluent containin …
In Malaysia, the amang industry is composed of both small and relatively large-scale plants. The industry employs about 1000 workers, with 50% of the 60 plants employing …
Port Klang, the largest port in the country is located in a distance of 200 kms from the processing plant at Kampar. Port Klang ranked as one of the busiest container port, comprises dedicated multipurpose port facilities and services which help shipments to be effected on time so as to meet the customers' delivery schedule.
Processing of by-product heavy minerals (amang) from tin mining involves potential exposure to external and internal sources of radioactivity.